Home / 4,747.61-7,120.78-1,237.87

Finding the Fourth Proportional to 4,747.61, 7,120.78 and 1,237.87

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Solution

The fourth proportional to 4,747.61, 7,120.78 and 1,237.87 is: 1,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.61 : 7,120.78 = 1,237.87 : x
  2. Step 2: Convert to fraction form
    4,747.61/7,120.78 = 1,237.87/x
  3. Step 3: Cross multiply
    4,747.61x = 7,120.78 × 1,237.87
  4. Step 4: Simplify right side
    4,747.61x = 8,814,564.33
  5. Step 5: Solve for x
    x = 8,814,564.33/4,747.61
  6. Step 6: Final answer
    x = 1,856.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.